| /* vi: set sw=4 ts=4: */ |
| /* |
| * Mini chroot implementation for busybox |
| * |
| * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org> |
| * |
| * Licensed under GPLv2 or later, see file LICENSE in this tarball for details. |
| */ |
| |
| /* BB_AUDIT SUSv3 N/A -- Matches GNU behavior. */ |
| |
| #include "busybox.h" |
| |
| int chroot_main(int argc, char **argv); |
| int chroot_main(int argc, char **argv) |
| { |
| if (argc < 2) { |
| bb_show_usage(); |
| } |
| |
| ++argv; |
| if (chroot(*argv)) { |
| bb_perror_msg_and_die("cannot change root directory to %s", *argv); |
| } |
| xchdir("/"); |
| |
| ++argv; |
| if (argc == 2) { |
| argv -= 2; |
| if (!(*argv = getenv("SHELL"))) { |
| *argv = (char *) DEFAULT_SHELL; |
| } |
| argv[1] = (char *) "-i"; |
| } |
| |
| execvp(*argv, argv); |
| bb_perror_msg_and_die("cannot execute %s", *argv); |
| } |